Overall: 22 3/8 x 2 1/2 x 1 in. ( 56.8 x 6.4 x 2.5 cm )
Steel angular bayonet with blade that is cruciform in cross section; cylindrical socket with rectangular mortise and oval reinforcing ferrule.
stamped: on one side of elbow:"77" stamped: on other side of elbow: a series of marks with "48" at the end
Due to ongoing research, information about this object is subject to change.